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CVE-2026-22782

RustFS RPC signature verification logs shared secret

Published: Jan 16, 2026Updated: Feb 9, 2026 Sources: CVE List NVD GHSA BDUCWE-532
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.5%
Top 62.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

RustFS is a distributed object storage system built in Rust. From >= 1.0.0-alpha.1 to 1.0.0-alpha.79, invalid RPC signatures cause the server to log the shared HMAC secret (and expected signature), which exposes the secret to log readers and enables forged RPC calls. In crates/ecstore/src/rpc/http_auth.rs, the invalid signature branch logs sensitive data. This log line includes secret and expected_signature, both derived from the shared HMAC key. Any invalidly signed request triggers this path. The function is reachable from RPC and admin request handlers. This vulnerability is fixed in 1.0.0-alpha.80.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-532

Affected Products

rustfsrustfs
Library
OSS Libraries / generic-library
rustfscrates.ioOSS Libraries
RustFSСообщество свободного программного обеспечения
On-prem
Operating Systems / linux-distro
rustfsoss-projectOSS Librariesaka rustfs
crates.iopackage-ecosystemOSS Libraries
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Credential Access
View detailed technique mapping

References

https://github.com/rustfs/rustfs/security/advisories/GHSA-333v-68xh-8mmq
github.com
https://github.com/rustfs/rustfs/commit/6b2eebee1d07399ef02c0863bd515b4412a5a560
github.com
https://github.com/rustfs/rustfs/blob/9e162b6e9ebb874cc1d06a7b33bc4a05786578aa/crates/ecstore/src/rpc/http_auth.rs#L115-L122
github.com
and 2 more references View all →

Timeline

Published
Jan 16, 2026
Last Updated
Feb 9, 2026

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